The cost difference between a Hybrid and gas Tahoe/Yukon isn't as much as some would think. Go to the GM site and build a non hybrid similarly equipped to a Hybrid and you'll find the difference isn't the $10k some would believe. My comparison came up with $5k difference. Your out the door price difference would obviously depend on your dealer's stock. As for actual GM incentives, they are identical for the Hybrid and non (at least for the last 2 months). Factor in the $2.2k tax credit and it gets even closer. Granted it will still take a while to pay back depending on your driving, but I've found that most of us Hybrid buyers do it for reasons other than the pure financial benefit (unless they are misinformed or suck at math). I own an energy conservation and project management consulting firm so the Hybrid is a marketing tool for me (I'm leaving all those stickers on). I also want to start doing my part to help our environment while still being able to take my family, camping gear, surf gear and biking gear ANYWHERE comfortably. I drive less than 10k miles a year here in Honolulu so the Hybrid will NEVER pay for its self but that's not why I bought it so I'm fine with that. Not trying to start a debate here, only have two real points:
1. Tahoe/Yukon Hybrids are excellent vehicles that can do more than any other hybrid out there while still lightening your carbon footprint.
2. Intelligent people don't buy Hyrbrids because they think the vehicle will pay for its self in fuel savings.